Crate of multiple uses

ABSTRACT

A crate of multiple uses, regular or foldable or dismantable, whose height is adjustable. A plastic component (M) is provided on at least two opposite vertical sides of the crate, this component being adapted to slide within the channels provided therein, being fixed at the desired position by moving the extension (M4) so as to insert the protrusions (M7, M7, M8) into notches. When the crate is foldable and dismantable at the same time the two vertical sides are separate items, while the remaining part of the crate consists of a single surface that is cut and folded accordingly or it consists of independent molded parts, which are pivotally connected. A mechanism K is provided onto the vertical sides that forms an appropriate notch adapted to receive therein parts of the folded material to form the dismantable crate. Dismantling of the crate is effected with the disengagement of mechanism K and the rotation thereof towards the interior of the crate, while the formation and stabilization thereof is performed with a single movement.

The invention relates to a crate of multiple uses, regular or foldableor dismantable, that is useful for the packaging and transportation ofagricultural and industrial products, meat, bakery products, etc..

To date there are several reusable crates, regular or foldable ordismantable, which are available in various dimensions. Since they arebeing transported stacked onto euro-pallets, their dimensions (lengthand width) are sub-multiples of the corresponding dimensions of thelatter (80 cm×120 cm); it has therefore been established that the lengthand width dimensions of the crates have to be 60 cm×40 cm and 40 cm×30cm. In this way mixed pallets may be provided with a large crateunderneath a pair of small crates and vice versa. Peaches, grapes, cupscontaining various fruits are being packed in crates of the same lengthand width but of varying heights, namely having a height of 10 cm forpeaches, of 11 cm for grapes, of 14 cm for the cups. A separate mold isused for the cast production of each one of these variably dimensionedcrates, whereby the cost of such molds, as well as the costs associatedwith the overall management of such different sizes of crates in thesupply chain is high.

The advantage of this invention is that in the crate of multiple uses,regular or foldable or dismantable, including the crate that isdismantable and foldable at the same time, at least two oppositevertical sides are constructed in a manner that allows variation of theheight thereof so as to satisfy varying specific requirements. That is,while as mentioned herein above up to date three different sizes ofcrates are required for packing peaches, grapes and cups, the presentinvention requires only a single crate with two opposite sides having aheight that can vary in the range of 10-14 cm. It therefore follows thata small number of crates having sides with variable height canadequately cover the needs of packaging for most products, sincehitherto the crates being used have heights within a range of 10 cm to25 cm.

FIG. 1 shows a plastic crate with an adjustable height according to theinvention with the height set at a maximum value,

FIG. 2 shows the same with an adjustable height according to theinvention with the height set at a minimum value,

FIG. 3 shows the crate with an adjustable height according to theinvention the crate being dismantable and foldable at the same time.

FIG. 4 shows the crates of adjustable height, which are being dismantledand folded, stacked one above the other according to the invention.

In the specification following hereinbelow, descriptions refer to aquarter or half of the crate due to the symmetry thereof,

Some of the embodiments of the invention are described below.

FIG. 1 shows a plastic crate of multiple uses A, regular or foldable ordismantable, which is constituted by the vertical sides B, C, D, E, andthe base F, wherein all vertical sides or at least two opposing sides ofthe four vertical sides, e.g. side C and similarly the opposing side Bare provided with vertically extending sliding channels C2, C3, C4.

A plastic component M is fitted onto this side, such plastic component Mconsisting of a horizontally extending bar M1 that constitutes the topof side C and similarly of side B of the crate, a pair of verticalextensions M2 and M3 emanating from such plastic component M and adaptedto slide within channels C2 and C3 of side C respectively. The slidingchannels C2 and C3 are open at the top thereof and extensions M2 and M3are adapted to slide within these channels in a manner that ensures thatcomponent M can move in the vertical direction only. A groove M5′ isprovided at the middle and underneath the horizontally extending bar M1,such groove being adapted to receive a correspondingly formed protrusionM5 provided at the top of the plastic surface M4, thereby forming ahinged connection that allows a slight rotation of surface M4 withinchannel C4. Protrusions M6, M7, M8 are provided longitudinally along thesurface M4, as shown in FIG. 1.1 that is a detail of FIG. 1, one ofthese protrusions M6, M7, M8 being inserted within the horizontallyextending bar C1 of side C at each particular instant thereby definingthe new height of the crate. Bar C1 is a II-section rotated by 90° sothat the protrusions M6, M7, M8 are being inserted within the gapthereof. A projection M9 with the shape of a rectangular parallelepipedis provided onto the surface M4 at the opposite side of that with theprotrusions. One side of projection M9 abuts onto side C and plays adual role: a) it operates as a spring that exerts a constant pressureonto M4 so that any protrusion that has been selected to be lockedwithin the II-section of C1 can be released only after exercising anopposite force onto M4, and b) it determine the exact position of theslots to facilitate the person who sets the height of the crate, sincesuch slots adapted to nest projection M9 are being provided at theproper height onto side C and at the side thereof that abuts onto theprojection M9. In this way the practitioner has a sense of the positionchosen to stabilize the mechanism M. The crate has a maximum height atposition M6, whereas a total of four different heights can be chosen forthe crate being depicted, the shortest being obtained at the initialsetting and the other three being determined by the number ofprotrusions being provided.

The mechanisms M may be mutually connected together so as to jointlymove upwardly or downwardly.

The mechanism M might also comprise additional desired protrusions thatcan be inserted within corresponding channels of side C, suchprotrusions having the same functional role as that of protrusions M2,M3, M4 or the role of simply averting the falling of products outsidethe crate.

FIG. 2 shows the plastic crate for multiple uses A having the minimumheight. From the position wherein the crate had the maximum heightwhereby the sides of surfaces M4 with the plastic components M of sidesB and C were being pushed towards the interior of the crate, these arebeing slightly rotated around the hinged connection of protrusion M5within the groove M5′, thereby unhooking the protrusion M5 from bar C1of side C and allowing sliding of the plastic components M within thechannels of sides B and C respectively until they terminate therein.

FIG. 3 shows the plastic crate for multiple uses A wherein the twoopposite sides B and C thereof have a variable height, whereas the othertwo vertical sides D and E and the base F thereof result from a unitarysurface of any material that can be cut and folded so as to form thecrate or they may be cast and be pivotally connected together with afilm or other connecting methods.

Extensions BE, BF, BD, and CE, CF, CD of a rectangular parallelepipedalshape are respectively provided onto the vertical sides B and C in whichthe plastic component M is being embedded. An additional plasticmechanism K of an inverted II-section is also provided with K1 and K3being the vertical sides and K2 the horizontal side thereof. K1 isparallel to the parallelepiped CE, K2 is parallel to CF and K3 to CD andaccordingly K1 is parallel to BE, K2 to BF and K3 to BD.

The mechanism K, as shown in FIG. 3.1 that depicts a detail of FIG. 3,abuts the inner surface of side of C, and similarly of side B, and inthe present embodiment it is being rotated around axis K4 that islocated at the upper end of K1 and is perpendicular thereto and aroundaxis K5 that is located at the upper end of K3 and is perpendicularthereto. These axes penetrate corresponding holes K4′ and K5′ providedonto CE and CD respectively so as to allow rotation of at least 90degrees of K in relation to the side C, to enable disassembly of thecrate in the manner that will be described hereinafter. At least twoprotrusions K6 and K7, perpendicular to K2 extend in the direction of C,such two protrusions K6 and K7 having a length such that they may ineach case not to protrude from side C, while corresponding holes K6′ andK7′ are provided at the positions of K6 and K7 on side C such that toallow insertion therein of the abovementioned protrusions when themechanism K abuts onto the side C. An appropriately shaped and sizedhole is provided at the end of protrusions K6 and K7, where in thisembodiment such hole is provided in a horizontal direction.

Onto the same side C and at the outer surface thereof another plasticmechanism Z that is shown in FIG. 3.2, a detail of FIG. 3 is providedsuch mechanism being appropriately incorporated in side C withoutprotruding therefrom. Mechanism Z consists of a plastic ring Z1 withangular extensions Z2 and Z3 and a horizontally extending pin Z4 whichis being inserted within the hole of protrusion K6 of mechanism K.Another symmetrical mechanism Z is provided at the other end of the sameplastic side, such mechanism having a pin that is being inserted withinthe hole of protrusion K7. In this way the mechanism K is held securelyagainst the side C. The dimensions of ring Z1 and the distance betweenthe two mechanisms Z which lie on the same side are such as toaccommodate the thumb in one mechanism and the middle finger of apractitioner in the other, so that when the mechanisms are being pulledthey may lead to projections Z2 and Z3 being deformed so that pin Z4 isbeing withdrawn from the hole of the protrusion K6 and the other pin iswithdrawn from the hole of the projection K7, thereby releasing themechanism K and allowing rotation thereof around axes K4 and K5 todismantle the crate. When the external force acting onto the twomechanisms Z is removed, then extensions Z2 and Z3 which were bent tendto return to their original position thereby leading to pins Z4 beinginserted within the holes of the protrusions K6 and K7 respectively.Mechanism K might be provided with more than two protrusions andcorresponding pins holding them depending on the forces being exerted onand within the crate.

The single surface that forms the two vertical sides D and E and thebasement F of the crate has an initial shape of a rectangularparallelepiped and is being cut to the desired dimensions or it may havethe desired dimensions if it is composed of discrete molded surfaceswhich are connected together, such surface being provided withfolds/hinges so as to form surfaces E1, E2 on side E, correspondingsurfaces D1, D2 on side D and surfaces F1, F2 on the basement F, asshown in FIG. 3.3 that depicts a detail of FIG. 3. Sides E and D arerotated towards the interior of the crate and perpendicularly to thebasement F around an axis with the corresponding fold/hinge S2. Thesurfaces E1, F1, D1 on one side and E2, F2, D2 on the other side arerotated towards the interior of the crate, more than 135° in one caseand more than 90° in another case, as will be explained immediatelybelow, around an axis of rotation of the corresponding fold/hinge S1thereof.

In the section of the groove being formed by (CD, C, K3) as shown inFIG. 3.4 that depicts a detail of FIG. 3, identical grooves beingfurther formed by (CE, C, K1), (CF, C, K2), (BE, B, K1), (BF, B, K2),(BD, B, K3), the groove consisting of a triangle with vertices K11, K12,K13 and with a right angle whose sides are the intersection of a portionof side C and the perpendicular to this CD, wherein the side (K12, K13)of the triangle abuts side C. The side of the triangle (K13, K11) isbeing extended by a few millimetres, and the distance of point K12 fromCD depends on the maximum thickness of the material to be used for themanufacture of E, F, D, whereas the distance of the point where theextension of side (K13, K11) ends from CD should be greater than twicethe thickness D or than the thickness of D plus the thickness of D2 incase it differs in this part, the angle being formed by the sides of thetriangle (K11, K12) and (K12, K13) being greater than 10°, and with thelength of D2 being less than the length of side (K11, K12) so that theportion D2 of side D, due to its tendency to return to its originalposition, would hook into this groove by the extension of side (K13,K11), so that finally the surfaces E1, F1, D1 on one side and E2, F2, D2on the other would permeate the grooves being formed onto the sides Band C to be entrapped therein and thereby forming the crate,

The crate might also be formed without mechanism K initially abuttingsides B and C, but being inclined with respect to them at an angle ofmore than 90° degrees. In this case the intersection of the groove beingformed by (CD, C, K3) as shown in FIG. 3.5, which is identical to thegrooves being formed by (CE, C, K1), (CF, C, K2), (BE, B, K1), (BF, B,K2), (BD, B, K3), the mechanism K is formed by a right angled trianglewith vertices K21, K22, K23 and by a rectangle with tops K21, K24, K25 ,K26 and a right angle whose sides are the intersection of a portion ofside C and the perpendicular therein CD, wherein the side (K22, K23) ofthe triangle abuts side C. The distance between the side (K24, K25) fromCD is equal to the thickness of D, and the distance of the side (K25,K26) from C is equal to the thickness of the portion D2 of side D,wherein the crate is in this case being formed after first having E1,F1, D1, on the one side and E2, F2, D2 abutting side B and side Crespectively, thereafter rotating the mechanism K up to the point ofbringing K to abut sides B and C, respectively, to have E1, F1, D1 andE2, F2, D2 entrapped within the grooves and thereafter have themechanisms K immobilized by the mechanisms Z so that crate A isultimately being formed,

Onto the surface out of which the two vertical sides D, E and thebasement F of the crate are being formed, there are providedfolds/hinges S3 onto the basement F of the crate, folds/hinges S4, S5,S6 onto the vertical sides E and D thereby forming the surface F3 ontothe basement F, the surfaces E3, E4, E5, E6, E7 onto side E and thecorresponding surfaces D3, D4, D5, D6, D7 onto the side D. The angleformed in between the folds/hinges S4, S5 is 45°. The distance inbetween the folds/hinges S1 and S4 is equal to or greater than thelength of the perpendicular drawn from the end of the extension of side(K13, K11) of the triangle and ending at side C in the first case and inthe second case it is equal or greater than the length of the side (K21,K22). The distance in between the folds/hinges S3 and S4 is analogue tothe above so that the surfaces E5 and E7 will abut each other and theparallelepiped N1 of mechanism N as will be explained hereinafter abutsF when the crate is being folded.

After the crate has been formed, exerting pressure onto surfaces E7 andD7 towards the interior of the crate around the axis of rotation beingdetermined by the folds/hinges S2 provided on either side of thebasement F, results in the crate being unfolded since surfaces ES and E6of side E follow, and similarly the corresponding surfaces of D, whichhowever move in the opposite direction to that of E7 around the axis ofrotation being determined by the folds/hinges S4, S5 for one of them andS4, S6 for the other. Sides B and C also follow, which are rotatedtowards the interior of the crate around the axis of rotation beingdetermined by the folds/hinges S3 provided on either side of thebasement F. Eventually E5 and E6 get to the point where their exteriorsurface abuts the exterior surface of E7 of side E, while it is in thisway that sides B and C are becoming parallel to the basement F of thecrate.

In this embodiment the fixation of the folding box so that it may retainits shape after being formed, is being performed as follows. Sections E7and D7 of the sides E and D respectively are provided with verticallyextending gaps N4′, N5′, a mechanism N being adapted to slide withinthese gaps, mechanism N having the shape of a II-section with unequalvertical sides N1 and N2 and a horizontal side N3, as shown in FIG. 3.6that is a detail of FIG. 3. The internal surface of the parallelepipedN1 abuts the internal surface of side E and the internal surface of N2abuts the external surface thereof, with the distance between them beingequal to or greater than the material thickness of E5, E6, E7 and thelength of N2 being less than N1. The protrusions N4 and N5 are shaped inthe form of a mushroom and provided in the parallelepiped N1 having abody with a height greater than the thickness of E7, being adapted tomove within the notches N4′ and N5′ of E7 so that when the crate hasbeen formed, mechanism N slides until the interior of the parallelepipedN3 abuts the upper part of E5, E6, E7, thereby restraining them frombeing folded. In this way the crate is being appropriately formed andfixed with a single motion and the adjustment of the height thereoffollows when necessary. The length of mechanism N is such that it mayallow the unobstructed folding of the crate.

The folding of the crate of a large height is being effected after theplastic components M on sides B and C slip into their original position,which is that where the crate has the minimum height. Thereafter, themechanisms N, which are located on the sides D and E of the crate A arebeing lifted, so that the bottom of the parallelepiped N2 of mechanism Nreaches a height higher than that of the sides D and E and then pressingD7 and E7 towards the interior of the crate leads to the latter beingfolded as described hereinabove.

The choice of the shape of mechanism K, i.e. of the manner in which thecrate is being formed, has more to do with the material from which sidesD, E and the basement F of the crate are being made, as well as with thespeed and the cost of construction of the machine employed in theforming process, since in both cases the method of disassembling thecrate is the same.

FIG. 4 shows plastic crates for multiple uses, having an adjustableheight and being dismantable in a folded condition, one on top of theother, according to the invention, wherein sides B and C of crate A areshown, whereupon are being mounted the mechanisms M that provideadjustment of the height of the crate and mechanisms Z that securely fixmechanism K in position.

The crates are provided with openings with a scope of saving materialand ventilation of the products contained therein. They are furtherprovided with notches that serve as handgrips, notches and protrusionsthat serve as supports when mixed pallets comprising crates sized 60×40cm and crates sized 40×30 cm are being made, so as to provide hooking ofthe crate when closed, mutual hooking of the crates when these arestacked one above the other when they are filled and when they arefolded, thereby creating rigid pallets. Where the word plastic isencountered, it is to mean all molded plastics, i.e. materials which canbe cast and vice versa.

1. Crate of multiple uses (A), regular or foldable or dismantable, comprising four vertical sides (B, C, D, E) and a basement (F), characterized in that at least two of the four opposite vertical sides (B) and (C) are being adapted to slide in the vertical direction within channels (C2, C3, C4) of side (C) and within similar channels of side (B), wherein each of these sides comprises a plastic component (M) that consists of a horizontally extending bar (M1) abutting the upper part of the side of the crate and constituting the top thereof, a pair of vertical extensions (M2) and (M3) emanating from said plastic component (M) and adapted to slide within the channels (C2) and (C3) of side (C) in a manner that ensures that component (M) can move in the vertical direction only, a groove (M5′) being provided at the middle and underneath the horizontally extending bar (M1), said groove being adapted to receive a correspondingly formed protrusion (M5) provided at the top of a plastic surface (M4), thereby forming a hinged connection that allows a slight rotation of the surface (M4) within channel (C4), said surface (M4) being adapted to freely slide within the associated larger channel (C4), protrusions (M6, M7, M8) being provided longitudinally along the surface (M4), wherein, depending on the crate height being selected, one of said protrusions (M6, M7, M8) is being inserted within a horizontally extending bar (C1) of side (C), said bar (C1) being a H-section rotated by 90° so as to allow insertion of the protrusions (M6, M7, M8) within the gap thereof, a projection (M9) with the shape of a rectangular parallelepiped being provided onto the surface (M4) at the opposite side of that with the protrusions, the top of projection (M9) abutting onto side (C) and playing the role of a spring that exerts a constant pressure onto (M4) so as to securely lock the protrusion that corresponds to the selected height of the crate within the bar (C1), said protrusion being released only after exercising an opposite force, whereas, with a scope of facilitating the quest for a newly selected height for the crate, small slots are being provided onto side (C) and at the side thereof that abuts onto the projection (M9), said slots correspondingly provided at the positions of the extensions (M6, M7, M8), so as to nest projection (M9) at one position and to securely lock at the same time the corresponding one of the projections (M6, M7, M8) onto the bar (C1).
 2. Crate of multiple uses according to claim 1, characterized in that it comprises: two vertical plastic sides (B, C) each of which incorporates a plastic component (M); two plastic mechanisms (K), one at each side (B) and (C), said mechanism (K) being pivotally mounted and appropriately fixed in abutting the interior of side (B) and side (C); four plastic mechanisms (Z), one pair of these mechanisms being incorporated in the outer surface of each one of the sides (B) and (C); a surface in the shape of a rectangular parallelepiped from any material that can be cut and folded or comprising cast surfaces, which are pivotally connected by means of a film or other connecting methods; two plastic mechanisms (N) that stabilize the crate; extensions (BE, BF, BD) and (CE, CF, CD) of a rectangular parallelepipedal shape are respectively provided perpendicularly at the sides of the bottom of the vertically extending sides (B) and (C) oriented towards the interior of the crate, said plastic mechanism (K) having a shape of an inverted II-section with vertical sides (K1, K3) and a horizontal side (K2), wherein, in side (C), side (K1) is parallel to a parallelepiped (CE), (K2) is parallel to (CF) and (K3) to (CD) and wherein, accordingly in side (B), side (K1) is parallel to (BE), (K2) is parallel to (BF) and (K3) to (BD), the mechanism (K) being rotated around an axis (K4) that is located at the upper end of (K1) and is perpendicular thereto and around an axis (K5) that is located at the upper end of (K3) and is perpendicular thereto, said axes (K4, K5) passing through corresponding holes (K4′) and (K5′) provided onto (CE) and (CD) respectively so as to allow rotation of mechanism (K) by at least 90° in relation to side (C) and at the other side so as to allow rotation of mechanism (K) by at least 90° in relation to side (B), at least two protrusions (K6) and (K7) being provided perpendicular to (K2) and extending towards the interior thereof, said protrusions (K6) and (K7) passing through sides (B) and (C) and having a length such that they may in no case protrude beyond side (B) and side (C) respectively, while corresponding holes (K6′) and (K7′) are provided at the positions of (K6) and (K7) on side (C), as well as on side (B), such that to allow insertion therein of said protrusions when the mechanism (K) abuts onto side (C) and similarly onto side (B), an horizontally extending hole being provided at the end of protrusions (K6) and (K7), said plastic mechanisms (Z) extending longitudinally along sides (B) and (C) and incorporated therein so as not to protrude therefrom, said mechanism (Z) comprising a plastic ring (Z1) with angular extensions (Z2) and (Z3) and a horizontally extending pin (Z4) which is being inserted within the hole of protrusion (K6) of mechanism (K0, whereas the other symmetrical mechanism (Z) that is provided at the other end of the same plastic side is provided with a pin that is being inserted within the hole of protrusion (K7), so as to securely hold mechanism (K) against side (B) and side (C), wherein the dimensions of ring (Z1) and the distance between the two mechanisms (Z) lying on the same side are such as to accommodate the thumb in one mechanism and the middle finger of a practitioner in the other, so that when the mechanisms are being pulled they may lead to projections Z2 and Z3 being deformed so that one pin (Z4) is being withdrawn from the hole of the protrusion (K6) and the other pin (Z4) is being withdrawn from the hole of the projection (K7), thereby releasing the mechanism (K), whereas as soon as the external force acting onto the two mechanisms Z is removed the extensions (Z2) and (Z3) which were bent tend to return to their original position thereby leading to pins (Z4) being inserted within the holes of protrusions (K6) and (K7) respectively; the basement (F) of the crate and the other two vertical sides (D) and (E) thereof are being formed from a single surface of an appropriate material or they are discrete molded surfaces which are connected together, such surface being provided with folds/hinges so as to form surfaces (E1, E2) on side (E), corresponding surfaces (D1, D2) on side (D) and surfaces (F1, F2) on the basement (F), wherein sides (E) and (D) are being rotated towards the interior of the crate and perpendicularly to the basement (F) around an axis with the corresponding fold/hinge S2, the surfaces (E1, F1, D1) on one side and (E2, F2, D2) on the other side being rotated towards the interior of the crate around an axis with their corresponding fold/hinge S1, thereby being entrapped within the slots formed between side (B) and mechanism (K) on one side and between side (C) and mechanism (K) on the other side thereby forming the crate; the crate being dismantled through pulling of mechanisms (Z) provided on either side thereof, thereby releasing mechanism (K) which rotates towards the interior of the crate and releases the sides (D, E) and the basement (F) of the crate from the other sides (B) and (C) thereof, wherein folds/hinges (S4, S5, S6) are additionally provided onto the vertically extending sides (E, D) and folds/hinges (S3) are additionally provided onto the basement (F), thereby forming the surfaces (F3) onto the basement (F), the surfaces (E3, E4, E5, E6, E7) onto side (E) and the corresponding surfaces (D3, D4, D5, D6, D7) onto side (D), wherein the angle formed in between the folds/hinges (S4, S5) is 45°, whereby exerting pressure onto surfaces (E7) and (D7) towards the interior of the crate leads to the crate being folded since sides (B) and (C) are rotated towards the interior of the crate around an axis of rotation being determined by the folds/hinges (S3) provided on either side of the basement (F), whereas portions (E7) and (D7) are rotated towards the interior of the crate around an axis of rotation being determined by the folds/hinges (S2) provided on either side of the basement (F), portions (E5) and (E6) of side (E) move in the opposite direction around an axis of rotation being determined by the folds/hinges (S4, S5) for one of them and (S4, S6) for the other until their exterior surface eventually abuts the exterior surface of portion (E7) of side (E), whilst their internal surface abuts the internal surfaces of sides (B) and (C) respectively, whereby sides (B) and (C) are eventually becoming parallel to the basement (F) of the crate; a mechanism (N) being provided in each one of the sides (E) and (D), said mechanism having the shape of a II-section with unequal vertical parallelepipedal sides (N1) and (N2) and a horizontal parallelepipedal side (N3), wherein the height of (N1) is larger than that of (N2) with the distance in between them being equal to or greater than the material thickness of (ES, E6, E7), protrusions (N4) and (N5) shaped in the form of a mushroom and having a body with a height greater than the thickness of (E7) being provided in the parallelepiped (N1), vertically extending notches (N4′) and (N5′) being provided onto portions (E7), (D7) of sides (E), (D) respectively, said protrusions (N4) and (N5) being adapted to move within the notches (N4′) and (N5′) so that mechanism (N) slides longitudinally along them without being exerted therefrom with the parallelepiped (N1) abutting the interior of side (E) and (N2) the exterior thereof, whereby as sides (B) and (C) are rotated to a vertical position relatively to the basement (F) of the crate thereby forming the crate, sides (E) and (D) that comprise a plurality of portions or pieces are being unfolded as their surfaces are rotated in a direction opposite to the direction of the same during folding of the crate, wherein, with a scope of stabilization of the crate, mechanisms (N) slide within the notches of portions (E7), (D7) until the interior of parallelepiped (N3) abuts the upper part of (ES, E6, E7) and of (D5, D6, D7) respectively thereby restraining them from being folded whereby the crate is being formed and fixedly secured in this position with a single motion only, while the length of mechanism (N) is such that it may allow the unobstructed folding of the crate, wherein folding of the crate is being effected with the mechanisms (N) being lifted so that the bottom of the parallelepiped (N2) of mechanism (N) reaches a height higher than that of the sides (E) and (D) and thereafter with exerting pressure onto (E7) and (D7) towards the interior of the crate to initiate folding thereof.
 3. Crate of multiple uses according to claim 2, characterized in that the notches being formed between side (B) and mechanism (K) abutting the same on the one hand and between side (C) and mechanism (K) abutting the same on the other, wherein, with a scope of forming the crate, surfaces (E1, F1, D1) on one side and (E2, F2, D2) on the other side must be entrapped within said notches, a groove being formed by (CD, C, K3) and identical grooves being further formed by (CE, C, K1), (CF, C, K2), (BE, B, K1), (BF, B, K2), (BD, B, K3), the groove consisting of a triangle with vertices (K11, K12, K13) and with a right angle whose sides are the intersection of a portion of side (C) and the perpendicular to this (CD), wherein a side (K12, K13) of the triangle abuts side (C), a side (K13, K11) of the triangle is being extended by a few millimetres, the distance of point (K12) from (CD) depending on the maximum thickness of the material to be used for the manufacture of (E, F, D) and the distance of the point where the extension of side (K13, K11) ends from (CD) should be greater than twice the thickness (D) or than the thickness of (D) plus the thickness of (D2) in case it differs in this part, the angle being formed by the sides of the triangle (K11, K12) and (K12, K13) being greater than 10° with the length of (D2) being less than the length of side (K11, K12) so that the portion (D2) of side (D) would hook into this groove by the extension of side (K13, K11) when the surfaces (E1, F1, D1) are rotated around an axis of their fold/hinge (S1) in order to be inserted into the notches.
 4. Crate of multiple uses according to claim 2, characterized in that the surfaces (E1, F1, D1) on one side and surfaces (E2, F2, D2) on the other side are rotated towards the interior of the crate by 90° around an axis of rotation of the corresponding fold/hinge (S1) thereof and are being entrapped within the grooves being formed between side (B) and mechanism (K) on the one hand and between side (C) and mechanism (K) on the other, wherein at first (E1, F1, D1) and (E2, F2, D2) are being brought in contact with sides (B) and (C) respectively and thereafter mechanisms (K) are rotated in order to entrap them in this position thereby forming the crate (A), wherein a section of the groove being formed by (CD, C, K3) identical grooves being further formed by (CE, C, K1), (CF, C, K2), (BE, B, K1), (BF, B, K2), (BD, B, K3) is a right angled triangle with vertices (K21, K22, K23) and a rectangle with vertices (K21, K24, K25 , K26) and a right angle whose sides are the intersection of a portion of side C and the perpendicular therein (CD), wherein the side (K22, K23) of the triangle abuts side (C) and the distance between the side (K24, K25) from (CD) is equal to the thickness of (D) and the distance of the side (K25, K26) from (C) is equal to the thickness of the portion (D2). 